Add the "check" option to daisydog that causes it to exit right away

If we want to just parse the daisydog output without actually running
the watchdog the check option can be very useful.

BUG=chrome-os-partner:24222
TEST=daisydog -c prints out status and exits

Change-Id: I442d3a2b18261669a65eca374b35904639c32a92
Reviewed-on: https://chromium-review.googlesource.com/178325
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Grant Grundler <grundler@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Doug Anderson <dianders@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
1 file changed